//
// Created by evenvi on 18-7-16.
//


#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <signal.h>
#include <unistd.h>
#include <stdlib.h>
#include <assert.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

//兼容
#include <stdbool.h>

static bool stop = false;

static void handle_term(int sig)
{
    stop = true;
}

int main(int argc, char* argv[])
{
    signal(SIGTERM, handle_term);

    if(argc <= 3)
    {
        printf("Usage: %s ip_address port_number backlog\n", basename(argv[0]));
        return 1;
    }

    const char* ip = argv[1];
    int port = atoi(argv[2]);
    int backlog = atoi(argv[3]);

    int sock = socket(PF_INET, SOCK_STREAM, 0);
    assert(sock >= 0);

    struct sockaddr_in address;
    bzero(&address, sizeof(address));
    address.sin_family = AF_INET;
    inet_pton(AF_INET, ip, &address.sin_addr);
    address.sin_port = htons(port);

    int ret = bind(sock, (struct sockaddr* )&address, sizeof(address));
    assert(ret != -1);

    ret = listen(sock, backlog);
    assert( ret != -1);

    sleep(20);
    struct sockaddr_in client;
    socklen_t client_addrlength = sizeof(client);
    int connfd = accept(sock, (struct sockaddr* )&client, &client_addrlength);
    if(connfd < 0){
        printf("errno is: %d\n", errno);
    }else{
        char remote[INET_ADDRSTRLEN];
        printf("connected with ip: %s and port: %d\n", inet_ntop(AF_INET, &client.sin_addr, remote, INET_ADDRSTRLEN), ntohs(client.sin_port));
        close(connfd);
    }

    close(sock);
    return 0;

}